The aviation tracking website FlightAware shows United Airlines is already canceling more than 350 flights for Friday in advance of the storm, which is predicted to dump up to two feet of snow in parts of the Northeast.

American has scrapped 43 flights.

FlightAware shows that airports with the most cancellations on Friday are Newark Liberty, Chicago O’Hare, and Boston Logan, in that order.

On Thursday, the biggest weather problems are in Chicago. O’Hare has seen 84 canceled departures.